Magnetic-Responsive Janus Nanosheets with Catalytic Properties

Dan Xue; Qing Bo Meng; Xi-Ming Song

doi:10.1021/acsami.8b21012

Magnetic-Responsive Janus Nanosheets with Catalytic Properties

ACS Appl Mater Interfaces. 2019 Mar 20;11(11):10967-10974. doi: 10.1021/acsami.8b21012. Epub 2019 Mar 7.

Authors

Dan Xue¹, Qing Bo Meng¹, Xi-Ming Song¹

Affiliation

¹ Liaoning Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials, College of Chemistry , Liaoning University , Shenyang 110036 , China.

PMID: 30793582
DOI: 10.1021/acsami.8b21012

Abstract

In this article, we describe a method to fabricate magnetic-responsive Janus nanosheets with catalytic properties via the surface protection method. Fe₃O₄ nanoparticles and PW₁₂O₄₀^3--based ionic liquid are located on the two opposite sides of the Janus nanosheets, respectively. The Janus nanosheets are characterized by Fourier transform infrared, scanning electron microscopy, transmission electron microscopy, atomic force microscopy, and ζ-potential analyses. They are used as recyclable catalysts to the esterification reaction of methanol and oleic acid for their magnetic-responsive and catalytic properties. The esterification ratio is up to 80% and there is nearly no change when Fe₃O₄ nanoparticles/PW₁₂O₄₀^3--based ionic liquid composite nanosheets were recycled four times.

Keywords: catalytic property; magnetic-responsive property; recyclability; single-molecular-thickness Janus nanosheet; surface protection method.